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        <p>Library Version 11.2.5.3</p>
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          <th colspan="3" align="center">Berkeley DB X/Open Compliant XA Resource Manager </th>
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          <th width="60%" align="center">Chapter 10. 
        Upgrading Berkeley DB 11.2.5.1 applications to Berkeley DB 11.2.5.2
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            <h2 class="title" style="clear: both"><a id="upgrade_11gr2_52_xa"></a>Berkeley DB X/Open Compliant XA Resource Manager </h2>
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            <span class="sect2">
              <a href="upgrade_11gr2_52_xa.html#idp973264">Constraints</a>
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            <span class="sect2">
              <a href="upgrade_11gr2_52_xa.html#idp978200">New Flag</a>
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              <a href="upgrade_11gr2_52_xa.html#idp982256">Modified Function</a>
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      <p>
        The Berkeley DB X/open compliant XA resource manager has been
        restored. (It was removed from the product after the 4.7 release.)
        The new implementation includes support for multi-threaded servers.
        Consult the documentation of your chosen transaction manager to
        learn how to implement a multi-threaded server.
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              <h3 class="title"><a id="idp973264"></a>Constraints</h3>
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        <p>
            Applictions that use a BDB XA resource manager must now take
            into account the following constraints.
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            <li>
                No in-memory logging.
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            <li>
                No application-level child transactions.
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            <li>
                All database-level operations (open, close, create 
                and the like)  must be performed outside of a global 
                transactions (i.e., they can be performed in local 
                BDB transactions, but not while a distributed 
                XA transaction is active).
            </li>
            <li>
                Environment configuration must be done using a 
                DB_CONFIG file.
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            <li>
                Cursors must be closed before a service invocation 
                returns.
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              <h3 class="title"><a id="idp978200"></a>New Flag</h3>
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            <li><code class="literal">DB_XA_CREATE</code> - This flag is passed to
                <a href="../api_reference/C/dbcreate.html" class="olink">db_create()</a> to create a <code class="literal">DB</code> handle that
                supports XA transactions.
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              <h3 class="title"><a id="idp982256"></a>Modified Function</h3>
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            <li><a href="../api_reference/C/dbstat.html" class="olink">DB-&gt;stat()</a> now returns the field
                <code class="literal">DB_TXN_STAT-&gt;DB_TXN_ACTIVE-&gt;xa_status</code>, which
                contains information on the XA transactions.
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